Saved Bookmarks
| 1. |
IB exams The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class. |
|
Answer» weight of 16 BOYS = 50.25 kgtherefore , total weight of 16 boys = (50.25 * 16)kg = 804 kgaverage weight of 8 boys = 45.15 kgtherefore , total weight of 8 boys = (45.15 * 8) kg = 361.2 kg.total number of boys = 16 + 8 = 24total weight of 24 boys = 804 + 361.2 = 1165.2 kgtherefore , average weight of 24 boys = (1165.2 / 24) kg = 48.55 kg. |
|